Inside - Important safety information - Warranty and other notices - Computer setup - Software recovery - Troubleshooting and diagnostics - Help and

Quick Reference Inside - Important safety information - Warranty and other notices - Computer setup - Software recovery - Troubleshooting and diagnostics - Help and Service - IBM Lotus software offer

Quick Reference

Note Before using this information and the product it supports, be sure to read the following: v Important safety information on page v v Appendix B, Lenovo Statement of Limited Warranty, on page 35 v Appendix D, Notices, on page 65 Third Edition (September 2006) Copyright Lenovo 2005, 2006. Portions Copyright International Business Machines Corporation 2005. All rights reserved. U.S. GOVERNMENT USERS RESTRICTED RIGHTS: Our products and/or services are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to the GSA ADP Schedule contract with Lenovo Group Limited, if any, or the standard terms of this commercial license, or if the agency is unable to accept this Program under these terms, then we provide this Program under the provisions set forth in Commercial Computer Software Restricted Rights at FAR 52.227-19, when applicable, or under Rights in Data-General, FAR 52.227.14 (Alternate III).

Contents Important safety information............... 11 Conditions that require immediate action............ 11 General safety guidelines................. 12 Electrical current safety information.............. 18 Lithium battery notice.................. 19 Modem safety information................. 19 Laser compliance statement................. 20 Power supply statement..................21 Data safety......................21 Cleaning and maintenance.................21 Additional safety information................21 Additional help.................... 23 Chapter 1. Arranging your workspace............ 25 Comfort....................... 25 Chapter 2. Setting up your computer............ 27 Turning on power................... 31 Finishing the software installation.............. 31 Completing important tasks................ 31 Updating your operating system............... 32 Installing other operating systems.............. 32 Updating your antivirus software.............. 32 Starting the Setup Utility................. 32 Shutting down the computer................ 33 Recording your computer information............. 33 Chapter 3. Recovering software............... 35 Creating and using product recovery discs............35 Backup and recovery...................36 Using the rescue and recovery workspace............37 Solving recovery problems.................39 Creating and using rescue media...............40 Creating and using a Recovery Repair diskette..........40 Recovering or installing device drivers.............41 Setting a rescue device in the startup sequence..........42 Chapter 4. Getting information, help, and service......... 43 Getting information...................43 Getting help and service..................43 Purchasing additional services................45 Lenovo 2005, 2006. Portions IBM Corp. 2005. 1

Chapter 5. Troubleshooting and diagnostics.......... 47 Basic troubleshooting...................47 Power supply and system board Diagnostic LEDs.........49 PC-Doctor for DOS Diagnostics................49 Error codes......................51 POST beep codes....................53 Appendix A. IBM Lotus Software Offer............ 55 Appendix B. Lenovo Statement of Limited Warranty........ 59 Part 1 - General Terms...................59 Part 2 - Country-unique Terms................63 Part 3 - Warranty Information................76 Guarantee supplement for Mexico...............84 Appendix C. Customer Replacement Units (CRUs)........ 87 Appendix D. Notices................... 89 Television output notice..................90 Trademarks......................90 Electronic emissions notices.................91 Federal Communications Commission (FCC) and telephone company requirements.....................93 Canadian Department of Communications certification label......94 Power cord notice....................95 Polyvinyl Chloride (PVC) cable and cord notice..........97 Waste electrical and electronic equipment (WEEE) notices.......97 Japanese recycling statement.................98 2 Quick Reference

Sisältö Tärkeät turvaohjeet................... 101 Välittömiä toimia edellyttävät tapahtumat tai tilat......... 101 Yleisiä turvaohjeita................... 102 Sähköturvaohjeet.................... 108 Litiumparistoon liittyvä huomautus.............. 109 Modeemiin liittyviä turvaohjeita............... 109 Laserturvaohjeet.................... 110 Virtalähteeseen liittyvät turvaohjeet............. 111 Tietoturva...................... 111 Tietokoneen puhdistus ja ylläpito.............. 111 Lisää turvaohjeita................... 111 Lisätietoja...................... 113 Luku 1. Työtilan järjestely................ 115 Työskentelymukavuus.................. 115 Luku 2. Tietokoneen asennus............... 117 Virran kytkentä laitteisiin................. 121 Ohjelmien asennuksen päättäminen.............. 121 Toimet ennen aloitusta.................. 122 Käyttöjärjestelmän päivitys................ 122 Muiden käyttöjärjestelmien asennus............. 122 Virustentorjuntaohjelman päivitys.............. 123 Asetusohjelman aloitus.................. 123 Tietokoneen käytön lopetus................ 123 Tietokoneen tunnistetietojen kirjaus.............. 123 Luku 3. Ohjelmien palautus................ 125 Elvytystietolevyjen luonti ja käyttö..............125 Varmistuskopiointi ja elvytys................127 Rescue and Recovery -työtilan käyttö..............128 Elvytykseen liittyvien ongelmien ratkaisu............129 Pelastamistietovälineiden luonti ja käyttö............130 Elvytyksen korjauslevykkeen luonti ja käyttö...........131 Laiteajurien elvytys (asennus)................132 Pelastamistietolaitteen määritys aloitusjärjestykseen.........132 Luku 4. Tietojen, ohjeiden ja tukipalvelujen saanti........ 135 Tietojen saanti.....................135 Ohjeiden ja tukipalvelujen saanti...............135 Lisäpalvelujen hankinta..................137 Lenovo 2005, 2006. Portions IBM Corp. 2005. 3

Luku 5. Vianmääritys ja häiriöiden poisto........... 139 Yleisimpien häiriöiden vianmääritys..............139 Virtalähteen ja emolevyn merkkivalot..............141 PC-Doctor for DOS Diagnostics................141 Virhekoodit......................143 Automaattisten käynnistystestien (POST) äänimerkit......... 145 Liite A. IBM Lotus -ohjelmistotarjous............. 147 Liite B. Lenovon takuuehdot (rajoitettu takuu).......... 151 Osa 1 - Yleiset ehdot...................151 Osa 2 - Maakohtaiset ehdot.................155 Osa 3 - Takuuta koskevat tiedot...............169 Meksikoa koskevat lisätakuuehdot...............177 Liite C. Asiakkaan vaihdettavissa olevat osat.......... 179 Liite D. Huomioon otettavaa................ 181 Television käyttöön liittyvä huomautus.............182 Tavaramerkit......................182 Tietoja sähkömagneettisesta säteilystä..............183 Federal Communications Commission (FCC) -säännökset ja puhelinyhtiöiden vaatimukset...............185 Kanadan tietoliikenneministeriön (Canadian Department of Communications) myöntämä laitehyväksyntä..........186 Verkkojohtoa koskeva huomautus...............187 PVC-kaapelia ja verkkojohtoa koskeva huomautus.........189 Sähkö- ja elektroniikkalaiteromua (WEEE) koskeva huomautus..... 189 Japanese recycling statement.................190 4 Pikaopas

Innhold Viktig sikkerhetsinformasjon............... 191 Situasjoner som krever øyeblikkelig handling.......... 191 Generelle retningslinjer for sikkerhet............. 192 Sikkerhetsinformasjon - strøm................ 198 Litiumbatteri..................... 199 Modemsikkerhet.................... 199 Laserutstyr...................... 200 Merknad om strømforsyning................ 200 Datasikkerhet..................... 201 Rengjøring og vedlikehold................ 201 Annen sikkerhetsinformasjon............... 201 Mer informasjon.................... 203 Kapittel 1. Ordne arbeidsområdet.............. 205 Komfort....................... 205 Kapittel 2. Klargjøre datamaskinen............. 207 Slå på strømmen.................... 211 Fullføre installeringen av programvaren............ 211 Fullføre viktige oppgaver................. 211 Oppdatere operativsystemet................ 212 Installere andre operativsystemer.............. 212 Oppdatere antivirusprogramvaren.............. 212 Starte Setup Utility-programmet............... 213 Slå av maskinen.................... 213 Notere opplysninger om maskinen.............. 213 Kapittel 3. Gjenopprette programvare............. 215 Opprette og bruke produktgjenopprettingsplater..........215 Sikkerhetskopiering og gjenoppretting.............216 Bruke Rescue and Recovery-arbeidsområdet...........217 Løse problemer med gjenopprettingen.............219 Opprette og bruke redningsmedier..............220 Opprette og bruke en gjenopprettingsdiskett...........221 Gjenopprette eller installere enhetsdrivere............221 Definere en redningsenhet i oppstartingssekvensen.........222 Kapittel 4. Få informasjon, hjelp og service........... 223 Få informasjon.....................223 Få hjelp og service....................223 Kjøpe tilleggstjenester...................225 Lenovo 2005, 2006. Portions IBM Corp. 2005. 5

Kapittel 5. Problemløsing og feilsøking............ 227 Grunnleggende problemløsing................227 Feilsøkingslamper for strømforsyning og systembord........229 PC-Doctor for DOS Diagnostics................229 Feilkoder.......................231 POST-lydkoder.....................233 Tillegg A. Tilbud om IBM Lotus-programvare.......... 235 Tillegg B. Lenovo Garantibetingelser............. 239 Del 1 - Generelle betingelser.................239 Del 2 - Landavhengige betingelser...............243 Del 3 - Opplysninger om garantibetingelser...........256 Guarantee supplement for Mexico...............264 Tillegg C. Deler som kan skiftes ut av kunden (CRUer)....... 267 Tillegg D. Merknader................... 269 Merknad om utsignaler for TV................270 Varemerker......................270 Elektronisk stråling....................271 Federal Communications Commission (FCC) and telephone company requirements.....................273 Canadian Department of Communications certification label......274 Strømledning......................275 PVC-ledning......................277 Merknader om avfall fra elektriske og elektroniske produkter (WEEE)... 277 Japanese recycling statement.................278 6 Hurtigreferanse

Indholdsfortegnelse Vigtige sikkerhedsforskrifter............... 279 Forhold, der kræver øjeblikkelig handling........... 279 Generelle sikkerhedsforskrifter............... 280 Sikkerhedsforskrifter vedrørende elektrisk strøm.......... 286 Litiumbatteri..................... 287 Sikkerhedsforskrifter for modem............... 287 Sikkerhedsforskrifter for laser................ 288 Sikkerhedsforskrifter for strømforsyning............ 288 Datasikkerhed.................... 289 Rengøring og vedligeholdelse............... 289 Andre sikkerhedsforskrifter................ 289 Mere hjælp...................... 291 Kapitel 1. Indretning af arbejdspladsen............ 293 Behagelig arbejdsstilling................. 293 Kapitel 2. Klargøring af computeren............. 295 Tænd for systemet................... 299 Afslutning af programinstallationen............. 299 Afslutning af vigtige opgaver................ 299 Opdatering af styresystemet................ 300 Installation af andre styresystemer.............. 300 Opdatering af antivirusprogrammet............. 300 Start af programmet Setup Utility.............. 300 Slukning af computeren................. 301 Registrering af oplysninger om computeren........... 301 Kapitel 3. Retablering af programmer............. 303 Oprettelse og brug af produktretableringsdiske..........303 Sikkerhedskopiering og retablering..............304 Brug af Rescue and Recovery-arbejdsområdet...........305 Løsning af retableringsproblemer...............307 Oprettelse og brug af genopretningsmedier............308 Opret og brug en reparationsdiskette..............308 Retablering eller installation af styreprogrammer..........309 Angivelse af en genopretningsenhed i startsekvensen........310 Kapitel 4. Oplysninger, hjælp og service............ 311 Oplysninger......................311 Hjælp og service.....................311 Køb af flere serviceydelser.................313 Copyright Lenovo 2005, 2006 7

Kapitel 5. Fejlfinding og problemløsning............ 315 Grundlæggende fejlfinding.................315 Lysdioder til fejlfinding af strømforsyningsenheden eller systemkortet...317 PC-Doctor for DOS Diagnostics................317 Fejlkoder.......................319 POST-bipkoder.....................321 Tillæg A. IBM Lotus-programtilbud.............. 323 Tillæg B. Lenovo Servicebevis............... 327 Del 1 - Standardvilkår...................327 Del 2 - Særlige vilkår for specifikke lande............331 Del 3 - Garantioplysninger.................344 Garantitillæg for Mexico..................352 Tillæg C. CRU (Customer Replacement Unit).......... 355 Tillæg D. Bemærkninger................. 357 Bemærkning om tv-output.................358 Varemærker......................358 Bemærkninger vedr. elektronisk stråling.............359 Federal Communications Commission (FCC) and telephone company requirements.....................361 Canadian Department of Communications certification label......362 Netledninger......................364 Bemærkning vedr. PVC-kabel og -ledning............365 Bemærkninger vedr. affald af elektrisk og elektronisk udstyr (WEEE)... 366 Japanese recycling statement.................366 8 Kom godt i gang

Innehåll Viktig säkerhetsinformation................ 369 Situationer som kräver omedelbara åtgärder........... 369 Allmänna säkerhetsanvisningar............... 370 Säkerhetsinformation om elström............... 376 Batteri........................ 376 Säkerhetsanvisningar för modem............... 377 Information om laserprodukt................ 377 Information om strömtillförsel................ 378 Datasäkerhet...................... 378 Rengöring och underhåll................. 379 Ytterligare säkerhetsinformation.............. 379 Här finns hjälp.................... 381 Kapitel 1. Ordna arbetsplatsen............... 383 Arbeta bekvämt.................... 383 Kapitel 2. Installera datorn................ 385 Starta datorn..................... 389 Avsluta programinstallationen............... 389 Genomföra viktiga uppgifter................ 389 Uppdatera operativsystemet................ 390 Installera andra operativsystem............... 390 Uppdatera antivirusprogrammet............... 390 Starta inställningsprogrammet (Setup Utility).......... 390 Stänga av datorn.................... 391 Registrera information om datorn.............. 391 Kapitel 3. Återställning av program.............. 393 Skapa och använda produktåterställningsskivor..........393 Säkerhetskopiering och återställning..............394 Använda Rescue and Recovery-arbetsutrymmet..........395 Lösa återställningsproblem.................397 Skapa och använda räddningsmedier..............398 Skapa och använda en räddningsdiskett.............398 Återställa eller installera om drivrutiner.............399 Ange en räddningsenhet i startordningen............400 Kapitel 4. Information, hjälp och service............ 401 Information......................401 Hjälp och service....................401 Köpa tilläggstjänster...................403 Lenovo 2005, 2006. Portions IBM Corp. 2005. 9

Kapitel 5. Felsökning och diagnostik............. 405 Enkel felsökning.....................405 Kontrollampor för felsökning av nätaggregat och systemkort......407 PC-Doctor for DOS Diagnostics................407 Felkoder.......................409 Ljudsignaler från självtest (POST)...............411 Bilaga A. Erbjudande om IBM Lotus-programvara........ 413 Bilaga B. Lenovo Garantivillkor............... 417 Del 1 - Allmänna villkor..................417 Del 2 - Nationsspecifika villkor................421 Del 3 - Garantiinformation.................434 Garantitillägg för Mexiko..................442 Bilaga C. Reservdelar som kunden själv kan byta ut (CRU)..... 445 Bilaga D. Övrig information................ 447 Information om funktioner för tv...............448 Varumärken......................448 Anmärkning om elektromagnetisk strålning...........449 FCC-krav och teleleverantörens krav..............451 Kanadensiska kommunikationsdepartementets certifiering.......452 Information om nätsladdar.................453 PVC-kabeln och information om nätsladdar...........455 AVfall från elektriska och elektroniska produkter (WEEE)....... 455 Japansk återvinning...................456 10 Översikt

Important safety information Note Please read important safety information first. This information can help you safely use your desktop or notebook personal computer. Follow and retain all information included with your computer. The information in this document does not alter the terms of your purchase agreement or the Lenovo Statement of Limited Warranty. For more information, refer to Appendix B, Lenovo Statement of Limited Warranty, on page 59. Customer safety is important. Our products are developed to be safe and effective. However, personal computers are electronic devices. Power cords, power adapters, and other features can create potential safety risks that can result in physical injury or property damage, especially if misused. To reduce these risks, follow the instructions included with your product, observe all warnings on the product and in the operating instructions, and review the information included in this document carefully. By carefully following the information contained in this document and provided with your product, you can help protect yourself from hazards and create a safer computer work environment. Note: This information includes references to power adapters and batteries. In addition to notebook computers, some products (such as speakers and monitors) ship with external power adapters. If you have such a product, this information applies to your product. In addition, computer products contain a coin-sized internal battery that provides power to the system clock even when the computer is unplugged, so the battery safety information applies to all computer products. Conditions that require immediate action Products can become damaged due to misuse or neglect. Some product damage is serious enough that the product should not be used again until it has been inspected and, if necessary, repaired by an authorized servicer. As with any electronic device, pay close attention to the product when it is turned on. On very rare occasions, you might notice an odor or see a puff of smoke or sparks vent from your product. Or you might hear sounds like popping, cracking, or hissing. These conditions might merely mean that an internal electronic component has failed in a safe and controlled manner. Or, they might indicate a potential safety issue. However, do not take risks or attempt to diagnose the situation yourself. Contact the Customer Support Lenovo 2005, 2006. Portions IBM Corp. 2005. 11

Center for further guidance. For a list of Service and Support phone numbers, see Worldwide telephone list on page 81. Frequently inspect your computer and its components for damage, wear, or signs of danger. If you have any question about the condition of a component, do not use the product. Contact the Customer Support Center or the product manufacturer for instructions on how to inspect the product and have it repaired, if necessary. In the unlikely event that you notice any of the following conditions, or if you have any safety concerns with your product, stop using the product and unplug it from the power source and telecommunication lines until you can speak to the Customer Support Center for further guidance. v Power cords, plugs, power adapters, extension cords, surge protectors, or power supplies that are cracked, broken, or damaged. v Signs of overheating, smoke, sparks, or fire. v Damage to a battery (such as cracks, dents, or creases), discharge from a battery, or a buildup of foreign substances on the battery. v A cracking, hissing, or popping sound, or strong odor that comes from the product. v Signs that liquid has been spilled or an object has fallen onto the computer product, the power cord, or power adapter. v The computer product, power cord, or power adapter has been exposed to water. v The product has been dropped or damaged in any way. v The product does not operate normally when you follow the operating instructions. Note: If you notice these conditions with a product (such as an extension cord) that is not manufactured for or by Lenovo, stop using that product until you can contact the product manufacturer for further instructions, or until you get a suitable replacement. General safety guidelines Always observe the following precautions to reduce the risk of injury and property damage. Service and upgrades Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or your documentation. Only use a service provider who is approved to repair your particular product. 12 Quick Reference

Note: Some computer parts can be upgraded or replaced by the customer. Upgrades typically are referred to as options. Replacement parts approved for customer installation are referred to as Customer Replaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate for customers to install options or replace CRUs. You must closely follow all instructions when installing or replacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside a product are zero. Before you remove the covers from a product equipped with an ac power cord, always make sure that the power is turned off and that the product is unplugged from any power source. For more information on CRUs, refer to Appendix C, Customer Replacement Units (CRUs), on page 87. If you have any questions or concerns, contact the Customer Support Center. Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety. Danger Hazardous moving parts. Keep fingers and other body parts away. Attention Before replacing any CRUs, turn off the computer and wait three to five minutes to let the computer cool before opening the cover. Static electricity prevention Static electricity, although harmless to you, can seriously damage computer components and options. Improper handling of static-sensitive parts can cause Important safety information 13

damage to the part. When you unpack an option or CRU, do not open the static-protective package containing the part until the instructions direct you to install it. When you handle options or CRUs, or perform any work inside the computer, take the following precautions to avoid static-electricity damage: v Limit your movement. Movement can cause static electricity to build up around you. v Always handle components carefully. Handle adapters, memory modules, and other circuit boards by the edges. Never touch exposed circuitry. v Prevent others from touching components. v When you install a static-sensitive option or CRU, touch the static-protective package containing the part to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two seconds. This reduces static electricity in the package and your body. v When possible, remove the static-sensitive part from the static-sensitive packaging and install the part without setting it down. When this is not possible, place the static-sensitive packaging on a smooth, level surface and place the part on it. v Do not place the part on the computer cover or other metal surface. Power cords and power adapters Use only the power cords and power adapters supplied by the product manufacturer. The power cords shall be safety approved. For Germany, it shall be H05VV-F, 3G, 0.75 mm 2, or better. For other countries, the suitable types shall be used accordingly. Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in ways that can cause the cord to fray, crack, or crimp. This can present a safety hazard. Always route power cords so that they will not be walked on, tripped over, or pinched by objects. Protect power cord and power adapters from liquids. For instance, do not leave your power cord or power adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids can cause a short circuit, particularly if the power cord or power adapter has been stressed by misuse. Liquids also can cause gradual corrosion of power cord terminals and/or the connector terminals on a power adapter, which can eventually result in overheating. 14 Quick Reference

Always connect power cords and signal cables in the correct order and ensure that all power cord connectors are securely and completely plugged into receptacles. Do not use any power adapter that shows corrosion at the ac input pins or shows signs of overheating (such as deformed plastic) at the ac input or anywhere on the power adapter. Do not use any power cords where the electrical contacts on either end show signs of corrosion or overheating or where the power cord appears to have been damaged in any way. Extension cords and related devices Ensure that extension cords, surge protectors, uninterruptible power supplies, and power strips that you use are rated to handle the electrical requirements of the product. Never overload these devices. If power strips are used, the load should not exceed the power strip input rating. Consult an electrician for more information if you have questions about power loads, power requirements, and input ratings. Plugs and outlets If a receptacle (power outlet) that you intend to use with your computer equipment appears to be damaged or corroded, do not use the outlet until it is replaced by a qualified electrician. Do not bend or modify the plug. If the plug is damaged, contact the manufacturer to obtain a replacement. Do not share an electrical outlet with other home or commercial appliances that draw large amounts of electricity; otherwise, unstable voltage might damage your computer, data, or attached devices. Some products are equipped with a three-pronged plug. This plug fits only into a grounded electrical outlet. This is a safety feature. Do not defeat this safety feature by trying to insert it into a non-grounded outlet. If you cannot insert the plug into the outlet, contact an electrician for an approved outlet adapter or to replace the outlet with one that enables this safety feature. Never overload an electrical outlet. The overall system load should not exceed 80 percent of the branch circuit rating. Consult an electrician for more information if you have questions about power loads and branch circuit ratings. Be sure that the power outlet you are using is properly wired, easily accessible, and located close to the equipment. Do not fully extend power cords in a way that will stress the cords. Important safety information 15

Be sure that the power outlet provides the correct voltage and current for the product you are installing. Carefully connect and disconnect the equipment from the electrical outlet. External devices Do not connect or disconnect any external device cables other than USB and 1394 cables while the computer power is on; otherwise, you might damage your computer. To avoid possible damage to attached devices, wait at least five seconds after the computer is shut down to disconnect external devices. Batteries All personal computers manufactured by Lenovo contain a non-rechargeable coin cell battery to provide power to the system clock. In addition, many mobile products, such as notebook computers, utilize a rechargeable battery pack to provide system power when in portable mode. Batteries supplied by Lenovo for use with your product have been tested for compatibility and should only be replaced with approved parts. Never attempt to open or service any battery. Do not crush, puncture, or incinerate batteries or short circuit the metal contacts. Do not expose the battery to water or other liquids. Only recharge the battery pack strictly according to instructions included in the product documentation. Battery abuse or mishandling can cause the battery to overheat, which can cause gasses or flame to vent from the battery pack or coin cell. If your battery is damaged, or if you notice any discharge from your battery or the buildup of foreign materials on the battery leads, stop using the battery and obtain a replacement from the battery manufacturer. Batteries can degrade when they are left unused for long periods of time. For some rechargeable batteries (particularly Lithium Ion batteries), leaving a battery unused in a discharged state could increase the risk of a battery short circuit, which could shorten the life of the battery and can also pose a safety hazard. Do not let rechargeable Lithium-Ion batteries completely discharge or store these batteries in a discharged state. Heat and product ventilation Computers generate heat when turned on and when batteries are charging. Notebook computers can generate a significant amount of heat due to their compact size. Always follow these basic precautions: v Do not leave the base of your notebook computer in contact with your lap or any part of your body for an extended period when the computer is 16 Quick Reference

functioning or when the battery is charging. Your computer produces some heat during normal operation. Extended contact with the body could cause discomfort or, potentially, a skin burn. v Do not operate your computer or charge the battery near flammable materials or in explosive environments. v Ventilation slots, fans, and/or heat sinks are provided with the product for safety, comfort, and reliable operation. These features might inadvertently become blocked by placing the product on a bed, sofa, carpet, or other flexible surface. Never block, cover, or disable these features. You should inspect your desktop computer for dust accumulation at least once every three months. Before inspecting your computer, turn off the power and unplug the computer s power cord from the electrical outlet; then remove any dust from vents and perforations in the bezel. If you notice external dust accumulation, you should also examine and remove dust from the inside of the computer including heat sink inlet fins, power supply vents, and fans. Always turn off and unplug the computer before opening the cover. If possible, avoid operating your computer within 2 feet of high-traffic areas. If you must operate your computer in or near a high-traffic area, you should inspect and, if necessary, clean your computer more frequently. For your safety and to maintain optimum computer performance, always follow these basic precautions with your desktop computer: v Keep the cover closed whenever the computer is plugged in. v Regularly inspect the outside of the computer for dust accumulation. v Remove dust from vents and any perforations in the bezel. More frequent cleanings might be required for computers in dusty or high-traffic areas. v Do not restrict or block any ventilation openings. v Do not store or operate your computer inside furniture, as this might increase the risk of overheating. v Airflow temperatures into the computer should not exceed 35 C (95 F). v Do not use non-desktop air filtration devices. Operating environment The optimal environment in which to use your computer is 10 C-35 C (50 F-95 F) with humidity ranging between 35% and 80%. If your computer is stored or transported in temperatures less than 10 C (50 F), allow the cold computer to rise slowly to an optimal operating temperature of 10 C-35 C (50 F-95 F) before use. This process could take two hours in extreme conditions. Failure to allow your computer to rise to an optimal operating temperature before use could result in irreparable damage to your computer. If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine. Important safety information 17